How did henry ford effect the automobile industry?

Which two sets of political ideas speed as a result of the worldwide depression of the 1930s

What city of ancient russia was heavily influenced by the byzantine merchants?

Which source would best a historian understand the effect of the great chicago fire on families? a. a biography of a chicago family displaced by the fire b. a letter from a grandmother in new york to her family in chicago c. a newspaper editorial about families who were displaced d. an oral history dictated by an adolescent who fled the fire